Date: Sun, 02 Oct 2005 03:50:03 -0400 From: Jim Keller <freebsd@contexthosting.net> To: freebsd-current@freebsd.org Subject: Re: mount --bind equivalent? mount_null broken or not? Message-ID: <433F912B.6060308@contexthosting.net> In-Reply-To: <20051002062012.GA12386@xor.obsecurity.org> References: <433F5AD7.9080705@contexthosting.net> <20051002062012.GA12386@xor.obsecurity.org>
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Hi Kris,
Thanks for the response. Are you aware of any bugs in nullfs on
FreeBSD 4? I'm still using 4.10/4.11 on a lot of servers. Although, as I
mentioned, I've been using nullfs pretty heavily for a ProFTPD chroot
for over 2 years now. I just don't want to suddenly get the bum's rush :)
-Jim Keller
Kris Kennaway wrote:
>On Sat, Oct 01, 2005 at 11:58:15PM -0400, Jim Keller wrote:
>
>
>>I've been using mount_null for quite some time to mount filesystems
>>beneath chroot jails, and have had no problems. However, the man page
>>for mount_null has had a warning (since 1995, apparently) that "IT
>>DOESN'T WORK", and I know OpenBSD has removed nullfs support as of
>>version 3.7 (per
>>http://archives.neohapsis.com/archives/openbsd/2005-09/0198.html). The
>>bug listed in that thread doesn't appear to apply to FreeBSD, as I was
>>able to successfully null mount /dev and list its contents. So my
>>questions are:
>>
>>1. is nullfs actively supported on FreeBSD? If so, are there plans to
>>continue supporting it?
>>
>>
>
>Yes and yes. In fact I don't know of any remaining nullfs bugs on
>FreeBSD 5 and above (although I only stress it on 6 and above), so the
>warning should just be removed.
>
>Kris
>
>
Kris Kennaway wrote:
>On Sat, Oct 01, 2005 at 11:58:15PM -0400, Jim Keller wrote:
>
>
>>I've been using mount_null for quite some time to mount filesystems
>>beneath chroot jails, and have had no problems. However, the man page
>>for mount_null has had a warning (since 1995, apparently) that "IT
>>DOESN'T WORK", and I know OpenBSD has removed nullfs support as of
>>version 3.7 (per
>>http://archives.neohapsis.com/archives/openbsd/2005-09/0198.html). The
>>bug listed in that thread doesn't appear to apply to FreeBSD, as I was
>>able to successfully null mount /dev and list its contents. So my
>>questions are:
>>
>>1. is nullfs actively supported on FreeBSD? If so, are there plans to
>>continue supporting it?
>>
>>
>
>Yes and yes. In fact I don't know of any remaining nullfs bugs on
>FreeBSD 5 and above (although I only stress it on 6 and above), so the
>warning should just be removed.
>
>Kris
>
>
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